Beyonce once turned down a song pal Chris Martin had written especially for her.
The Coldplay frontman submitted the unnamed tune to Beyonce's managers, who chose not to record the track.
In a new interview with Maxim magazine, Martin reveals, "It got rejected by her A&R (artists and repertoire) people."
But another tune he wrote for R&B beauty Rihanna was picked up.
Martin explains, "It was when she was doing (album) Rated R, but it took so long. There's still this tribalism in music where we're rock and you're hip-hop, and sometimes it takes a while to get across those barriers."
Eventually, Martin chose to reclaim the song, Princess Of China, and it appears on Coldplay's new album Mylo Xyloto. Rihanna features on the tune.